P-Block Elements Group 13 to 18 (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Chemistry): Questions 1 - 7 of 13

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Question number: 1

» P-Block Elements Group 13 to 18 » Group 13 » Boron

Appeared in Year: 2013

MCQ▾

Question

In the structure of borax, the number of boron atoms and B-O-B units, respectively are

Choices

Choice (4) Response

a.

4 and 3

b.

5 and 4

c.

5 and 3

d.

4 and 5

Question number: 2

» P-Block Elements Group 13 to 18 » Group 13 » Boron

Appeared in Year: 2013

MCQ▾

Question

Hydrolysis of gives X which on treatment with sodium carbonate produced Y. X and Y respectively are

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 3

» P-Block Elements Group 13 to 18 » Group 18 » Introduction

Appeared in Year: 2013

MCQ▾

Question

The Number of lone pair (s) on Xe in an are, respectively

Choices

Choice (4) Response

a.

4 and 2

b.

2 and 3

c.

4 and 1

d.

3 and 2

Question number: 4

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

The correct formula of borax is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 5

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

The Structure of diborane () contains

Choices

Choice (4) Response

a.

Four bonds and two bond

b.

Four bonds and four bond

c.

Two bonds and four bond

d.

Two bonds and two bond

Question number: 6

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

The stability of + 1 oxidation state increases in the sequence

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 7

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

What is the hybridisation of four Boron atoms in Borax?

Choices

Choice (4) Response

a.

b.

c.

d.

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